Pumping apparatus.



M. T. CHAPMAN.-

PUMPING APPARATUS.

`APPLICATION man Fe.3.1912.

Patented an. 9, 1917.

3 SHEETS-SHEET l.

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M. T. CHAPA/mw.7

PUIVIPING APPARATUS.

APPLlcArloN man FEB.3,1912.

1,21 1,408. Patented Jan, 9, 1917.

3 SHEETS-SHEET Z.

M. T. CHAPMAN.

PUMPING APPARATUS.

APPLICATION FILED FEB. 3. 1912.

1,21 1,408. P Patented Jan. 9,1917.

a SHEETS-SHEET 3.

narran sra'ras rafran'r ortica.

MATTHEW 'I'. CHAPMAN, OF AURORA, ILLINOIS, ASSIGNOR TO THE AMERICAN WELL WORKS, OF AURORA,` ILLINOIS, A CORPORATION OF ILLINOIS.

PUMPING APPARATUS.

Specification of Letters Patent.

Application led February 3, 1912. Serial No. 675,324.

To all whom it may concern.'

Be it known that I, "MATTHEW T. CHAP- MAN, a citizen of the United States, residing at Aurora, in the county of Kane, State of Illinois, have invented certain new and useful Improvements in Pumping Apparatus, of `which the following is a specification, reference being had to the accompany-` i substantially uniform from one end of the stroke to the other, as distinguished from the action of a crank in which the speed of the stroke varies more or less throughout the entire stroke; and also to provide improved means for converting thev rotary movementv of an endless driving device into the recip-A rocating movement necessary for actuating the pump rod or rods; `also to provide certain other improvements, which will be hereinafter pointed out. I accomplish these objects as illustrated in the drawings and as hereinafter described.

What I regard as new is set forth in the claims. Y

In the accompanying drawings, Figure 1 is a side view of my improved mechanism; Fig. 2 is a front view; Fig. 3 is a horizontal section on line 3 3 of Fig. 1; Fig. 4 is a plan view, partly broken away; and'Fig. 5 is a horizontal section on line 5-'-5 of Fig. 1.

My improved pumping mechanism comprises an endless driving device consisting of a chain or chains `arranged to travel in a vertical plane adjacent to the pump rod or rods, such endless driving device being driven continuously in the same direction and being connected with the pump rod or rods so that the continuous movement of the endless driving mechanism effects the reciprocation of the pumping devices. Provision is made for driving the .chain or chains either from an engine or. motor, or by a windmill or other equivalent device; for adjusting the chain or .chains to compensate for wear, and for moving aside the operating mechanism'to permit the pump-rod to be removed.

Referring to the drawings, 6 indicates a base-plate of suitable construction to 'support a standard 7 which rises therefrom and is provided with a laterally-projecting arm 8 at its upper end.

9 indicates a rod or bar,`the lower end of which is secured to the base-plate 6, preferably by nuts 10-11, its upper end passing through the outer end portion of the arm-8 and being secured in place by nuts 12-13 above and below said arm, as shown in Fig. 1. The rod 9 vserves to brace the arm 8 and prevent the standard 7 from tilting. By y adjusting the nuts'12-13 upon the rod 9 it may be kept under the proper tension tov prevent saggingr of the arm 8.

As shown in Figs. 1 and 5, the standard 7 is provided at its inner'edge with a Hange 14e which extends longitudinally thereof and -is planed or made smooth so' as to form .a

way or guide for a head 15 which embraces the same and travels thereon, as best shown in Figs. 1 and 5. The head 15 is connected by a web 16 with a A.block 17, to which is secured the upper end of the pump-rod 18, preferably by nuts 19-20, as shown in Fig. 1. rIhus, `as the pump-rod 18 reciprocates,

the head 15 will slide up andv down on the 21 indicates a crank-arm, whichv way 14. is pivoted to the upper portion of the block 17 by a pivot 22, as shown in Fig. 1. The purpose of this 'crank-arm will be hereinafter .set forth. 23-24 indicate two U- shaped frames which are mounted upon theV base 6 at opposite sides of the pump-rod 18 and of the standard7, as best shownin Fig. 2. 25--26 indicate shafts mounted upon the frames 234-24, respectively, and-*carry-V ing gears 27-28 and sprocket-wheels 29--30, respectively, saidy sprocket-wheels being placed at the inner ends of said shafts, `as shown in Fig. 2. 31,l indicates a shaft which is lmounted in the frames 23-24 and Y Vwhich depends from the arm 8, being supported by'bolts 38, 'as shown in Figs. 1 and 2. The bolts 38 pass through Vthe armr 8 and are provided atltheir upperfendswith vnuts 39 Patented Jan. 9, 1917.

` wheels 529-30, respectively.' Said shafts also carry ratchet-wheels i6-d, as shown in Figs. l and2. L8-41:9 indicate chains which work on and are driven by the sprocket-wheels 29--44 'and 30-4i5- as shown in Fig. 2. As best shown in Fig. l, the Vcrank-arm V".21 is connected with the chains IS-49 by a pin 50 which serves also as a pivot to imite the adjoining links of the chains. It will be apparent that by this construction, when the'A shaft 3l is driven, the gears 27-28 will rotate and consequently drive the chains IS-ff). VThe movement" of the'chains, through the connection of the crank-arm 2l therewith, will consequently reciprocate the pump rod or rods. It will be apparent also that during the greater part of the movement of the puinp-rod, either up or down, it will move at a uniform rate, the iate varying only as the crank-arm slows down in passing around either Vthe,

upper or the lower sprocket-wheels. The upper end ofthe pump-rod is held steady by means of the sliding block l5, but the crankariii 21,'of course, swings upon its pivot 22 as it passes around the upper or lower sprocket-wheels. operating the puinp-rod by a windmill, or other equivalent device, I provide a forked lever 5l, the arms of which are pivoted upon Vthe shafts LQ-l, said arms being provided with pawls 52 which engageV the ratchetwheels 46%@ as shown in Fig. l, so that by Vswinging the lever 51 the chains may be driven. 53 indicates a pitman connecting the lever 5l with the windmill. It will be understood, of course, that when the lever V5l is'employed for driving the chains the shaft 31 is not to be driven by the pulley 33, the driving belt beingV then on the loose pulleyV 34:. If Va motor is employed for Ydriving the shaft 31 throughthe medium 0f Vmounted'on the base Vso that they maybe movedaway from over the well to permit of In order to provide forl the removal of thepump-i'od when necessary. When the standard and frames are in operative position7 they are held in place by the rod 9, but such rod'may be disconnected vfrom the base by loosening or removing the'nuts 10-11 and the nuts l2-l3. If, `then,tlie puinp-rod is disconnected from the driving chains by removing the pivot pin 50, the standard and frames, with the parts carried by them, may be slid to one side, leaving the puinp-rod exposedso that it may readily be removed.

That which I claim as my invention, and desire to secure by Letters Patent, is,-

l. A pumping mechanism, comprising a standard having a horizontal arm, a bracket adj ustably supported by said arm, a. sprocketwheel Vcarried by said'b'racket, a lower sprocket-wheel, an endless chain operating on said sprocket-wheels, means for driving said chain, a pump-rod, and swinging means connecting said pump-rod with said chain.

2. A pumping mechanism, comprising a standard having a horizontal arm, a bracket adjustably supported by said arm, sprocketwheels carried by said bracket, lower sprocket-wheels, endless chains operating on said sprocket-wheels, a pump-rod extending between said chains, a swinging connection connecting said pump-rod with said chains, and means for driving said chains.

8. A pumping'mechanism, comprising a base, a standard, upper sprocket-wheels supported by said standard, frames mounted on said base, sprocket-wheels supported by said frames, endless chains operating on said sprocket-wheels, a pump-rod extending between said chains, a swinging connection between'said pump-rod and said chains, and means for driving said chains, said standard and brackets being slidably mounted on the base whereby they may be moved away from the pump-rod. 4 Y

4L. A pumping mechanism, comprising a base, a standard, upper sprocket-wheels supported by said standard, frames mounted on said base, sprocket-wheels supported by said frames, endless chains 'operating on said .sprocket-wheels, a pump-rod extending between said chains, a Vswinging connection between said pump-rod and said chains, means for driving said chains, said standard and brackets being slidably mounted on the base whereby they may be moved away from the pump-rod, and a rod connecting the upe per portion of the standard with the base.

5. In a pumping mechanism, the combina- Ytion of a frame, a head slidably mounted thereon, Aa pair of endless chains supported atV one end by said head and at the other end vbysaid Yframe, a plurality of bolts adjustbly connecting said head with said frame Yfor tightening said chains, means for drivpump-rod whereby the movement of the chains reciprocates the pump-rod.

6. In a pumping mechanism, the combination of a frame, a head comprising a shank slidably mounted in a. suitable slideWay at the upper end of said frame, a pair of endless chains supported at one end by said head and at the other end by said frame below said head, a plurality of bolts adjustably connecting said head with said frame for tightening said chains, means for driving said chains in unison, a pump-rod, and connections between said chains and said pump-rod whereby a movement of the chains reciprocates the pump-rod.

7. In a pumping mechanism, the combination of a frame comprising a verticallyextending guide-plate and a horizontally-expump-rod having iiXed connection with said v slide-block, means for driving said chains in unison, and a link pivotallyV connected with said slide-block and With said chains.

MATTHEW T. CHAPMAN.

Vitnesses: y JOHN L. JACKSON, L. W. BENEDICT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Y Washington, D. C. 

